代谢性酸中毒的血钾浓度往往()。 ["升高","降低","不发生变化","可发生波动","以上均正确"]
男性,27岁,体检时发现心率52次/分,律齐,心电图显示窦性心动过缓,根据运动后心电图有助于初步判断心动过缓是属于生理性还是病理性的动作是() ["休息30分钟","短时间快速蹲立运动","深吸气","深呼气","左侧卧位"]
哪种情况下左右两侧肺的通气大致相同() ["清醒正常人坐位","清醒正常人仰卧位","清醒正常人直立位","清醒正常人侧卧位","上述均不对"]
属于舌下区境界的是() ["颏舌骨肌之上","口底黏膜之上","下颌舌骨肌之上","前界为颏结节","后以舌骨体为界"]
先天性心脏病右向左分流型最明显的特征是() ["心脏杂音","发育迟缓","发绀","呼吸困难","活动耐力下降"]
MF